Blast-nozzle.



No. 695,967. Patented Mar. 25, |902.

J. S. THURMAN. BLAST NozzLE.

(Application med Dec. 17, 1901.

(No Model.)

'nl "13 f j itin BLAST-NOZZLE.

SPECIFICATION forming part of Letters Patent No. 695,967, dated March 25, 1902.

Application filed December 17, 1901. Serial No. 86,259. (No model.)

To @ZZ whom, it may concern:

Beitknown that I, JOHN S. THURMAN, a citizen of the United States, residing at the city of St. Louis, State of Missouri, have invented a certain new and useful Improvement in Blast- Nozzles, of which the following is a full, clear, and exact description, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, forming part of this specification, in which- Figure lis a side elevational view of my irnproved blast-nozzle. Fig. 2 is a vertical longitudinal sectional view therethrough. Fig.

3 is a cross-sectional view on line 3 3, Fig. 2.

Fig. et is a plan view of one of the sections of which my improved nozzle isformed. Fig. 5 is a detail view of one of the spacing-washers, and Fig. 6 is a similar view of the spacing-washer employed in connection with the central spreading-post- This invention relates to a new and useful improvement in blast-nozzles designed especially for use in connection with a flexible pipe through which is conducted compressed airfrom some suitable source for cleaning purposes. The blast-nozzle is so constructed that it emits a wide thin blast of air, which is desirable in cleanin gs walls, upholstery, and the like. Y

My invention consists in the construction, arrangement, and combination of the several parts, all as will hereinafter be described, and afterward pointed out in the claims.

In the drawings, l indicates a flexible pipe leading from some suitable source of compressed-air supply, said pipe being connected to a metallic section 2, in which is located a suitably-controlled valve 3. On the end of section 2 is a coupling-collare, the outer end of said collar being provided with female threads which inclose and hold together a sectional threaded boss projecting from the inner end of the divided blast-nozzle.

5 indicates a section of my improved blastnozzle, which is provided with lateral anges (i, suitably perforated and threaded for the reception of attaching-screws. The inner end has a semicircular threaded projection which when assembled with its companion forms a threaded boss designed to be screwed into the collar 4. The outer end has a lip 7 flush with the faces of flanges 6.

S indicates a spreadingpost preferably arranged about the center of the section, said post being tapped for the reception of a securing-screw. The inner face of the section is hollowed out to form a chamber when the parts are assembled for the passage of air.

In manufacture the two sections or parts of the nozzle may be made from the same pattern', the inner faces of the fianges 6, the lip 7, and the post 8 being finished ush with each other. In assembling the parts a washer 9 is introduced between the posts S,and washers 10 are arranged between the `flanges 6. These washers space the parts of the nozzle, and their thickness determines the width of the slot or opening between the lips 7. If it is desired that the nozzle shall emit a thin blast, thin washers 9 and l0 are employed, while a thick blast will issue from the nozzle by increasing or doubling the thickness of the washers. After the parts of the nozzle are assembled they are screwed under the collar 4c, which collar assists in holding the parts together in addition to providing a coupling. The posts 8 divert the current of air and force it to both sides of the nozzle, and thus said posts serve to spread the blast.

I am aware that many minor changes in the construction, arrangement, and combination of the several parts of my device may be made and substituted for those herein shown and described without in the least departing from thenature and principle of my invention.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, isy l. A blast-nozzle composed of like sections having spacing-washers arranged between them for determining the thickness of the blast, and means for securing said sections together; substantially as described.

2. A blast-nozzle composed of like sections whose inner marginal faces are finished ilush, spacing-washers for determining the thickness of the blast, and means forsecuring said sections together; substantially as described.

3. A blast-nozzle divided horizontally, the two like sections thereof having tlanges 6 and lips 7, washers between said iianges, and so- IOD each section having lateral flanges G, a lip 7, and a spreading-post 8, washers interposed between the flanges and posts, securing devices passing through said iianges and posts, and a coupling 4 substantially as described.

In testimony whereof I hereunto affix my signature, in the presence of two witnesses, this 14th day of December, 1901.

^ JOHN S. THURMAN.

Vitnesses:

GEORGE BAKEWELL, G. A. PENNINGTON. 

